/**
 * Restrict sending request.
 *
 * @param bool $is_valid is valid request.
 * @param int $user_id sender user.
 *
 * @return bool
 */
function buddydev_custom_restrict_sending_friendship_request( $is_valid, $user_id ) {

        // If a user has these many friends, they won't be able to send new request.
        $limit_on_friends_count = 1;

        // If a user has specified number of friends, can not send new request.
        if ( friends_get_friend_count_for_user( $user_id ) >= $limit_on_friends_count ) {
                return false;
        }

        // for sent request count.
        global $wpdb;
        $bp = buddypress();

        $sent_count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT('*') FROM {$bp->friends->table_name} WHERE initiator_user_id = %d", $user_id ) );

        // this is the maximum number of request a user can send
        // it includes accepted friendship(sent by the user too).
        $allowed_request_count = 1;// change it if you need.
        if ( $sent_count >= $allowed_request_count ) {
                return false;
        }

        return $is_valid;
}

add_filter( 'bpf_restrictions_user_is_valid_sender', 'buddydev_custom_restrict_sending_friendship_request', 10, 2 );

–

Yes i copied from the email you sent me

Thank you boss, it worked ..

Should i close this thread as resolved? ..when i have another trouble/question ild open another thread??

Aiit thanks boss